CVE-2026-13609Public exploitNetwork attack vector

Unauthenticated stored XSS via post-sanitization entity decoding

Published Jul 31, 2026 · Updated Jul 31, 2026

Stored XSS in DynamiApps Frontend Admin before 3.29.9 allows remote attackers to run script in a viewer's browser via form input. Form processing applies sanitization before HTML entity decoding, so a double-encoded tag is restored, stored, and later rendered without escaping. Exploitation requires a guest-submittable form and a display surface for the submitted field; viewing that surface executes the script in the user's WordPress origin.

CVSS severity8.8
High
EPSS probability0.24%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Stored XSS in DynamiApps Frontend Admin before 3.29.9 allows remote attackers to run script in a viewer's browser via form input. Form processing applies sanitization before HTML entity decoding, so a double-encoded tag is restored, stored, and later rendered without escaping. Exploitation requires a guest-submittable form and a display surface for the submitted field; viewing that surface executes the script in the user's WordPress origin.

The record

CVE
CVE-2026-13609
Published
Jul 31, 2026
Updated
Jul 31, 2026
Vendor
DynamiApps
Product
Frontend Admin
Classifications
CWE-79, T1203
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 31, 2026CVE publishedPublication date reported by the CVE source.
  2. Jul 31, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <3.29.9

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

DynamiApps · Frontend Adminversion=0 <3.29.9

Published CVSS scores

8.8CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1203Exploitation for Client Execution

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo